US3221831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winged surface effect vehicles
Assignee: DONGLAS AIRCRAFT Co Inc
•
Filing: 1963-12-13
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Granted: 1965-12-07
•
Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
- 👤 Carl W Weiland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:19
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/32; B63B1/322; B60; B60V; B60V1/00; B60V1/22; B63B1/02; B63B1/10; B63B1/12; B64; B64C; B64C35/00; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A SURFACE EFFECT VEHICLE OF THE CHARACTER TO TRAVEL AIRBORNE IN SURFACE EFFECT OVER TERRAIN SURFACES COMPRISING: A STREAMLINED HULL; A SUBSTANTIALLY HORIZONTALLY DISPOSED WING AFFIXED TO SAID HULL ADJACENT THE LOWER PORTION THEREOF AND HAVING AN APPROXIMATELY PLANAR UNDER SURFACE WITH LEADING EDGE AND TRAILING EDGE REGIONS EXTENDING ALONG A MAJOR PORTION OF THE LENGTH OF SAID WING, SAID WING HAVING A DEFINITELY POSITION ANGLE OF ATTACK, WHICH EFFECTIVELY FUNNELS A LARGE VOLUME OF AIR INTO A SMALLER VOLUME TOWARD SAID TRAILING EDGE BETWEEN SAID WING AND SAID SURFACE TO CREATE A LIFTING CUSHION BENEATH SAID WING BY ITS FORWARD VELOCITY OVER SAID TERRAIN SURFACES; THRUST PRODUCER MEANS MOUNTED ON SAID VEHICLE FOR CREATING SAID FORWARD VELOCITY; AN INFLATABLE DIAPHRAGM CONNECTED TO THE BOTTOM OF SAID HULL FOR LIFTING SAID WING ABOVE SAID SURFACE FOR TAKEOFF OF SAID VEHICLE, SAID MEANS BEING RETRACTABLE DURING FLIGHT TO MINIMIZE THE DISTANCE BETWEEN SAID WING AND SAID SURFACE DURING FLIGHT.
Claim 2
Dependent Claim
158 words
A SURFACE EFFECT VEHICLE OF THE CHARACTER TO TRAVEL AIRBORNE IN SURFACE EFFECT OVER TERRAIN SURFACES COMPRISING: A STREAMLINED HULL; A SUBSTANTIALLY HORIZONTALLY DISPOSED WING AFFIXED TO SAID HULL ADJACENT THE LOWER PORTION THEREOF AND HAVING AN APPROXIMATELY PLANAR UNDER SURFACE WITH LEADING EDGE AND TRAILING EDGE REGIONS EXTENDING ALONG A MAJOR PORTION OF THE LENGTH OF SAID WING, SAID WING HAVING A DEFINITELY POSITION ANGLE OF ATTACK, WHICH EFFECTIVELY FUNNELS A LARGE VOLUME OF AIR INTO A SMALLER VOLUME TOWARD SAID TRAILING EDGE BETWEEN SAID WING AND SAID SURFACE TO CREATE A LIFTING CUSHION BENEATH SAID WING BY ITS FORWARD VELOCITY OVER SAID TERRAIN SURFACES; THRUST PRODUCER MEANS MOUNTED ON SAID VEHICLE FOR CREATING SAID FORWARD VELOCITY; AN INFLATABLE DIAPHRAGM CONNECTED TO THE BOTTOM OF SAID HULL FOR LIFTING SAID WING ABOVE SAID SURFACE FOR TAKEOFF OF SAID VEHICLE, SAID MEANS BEING RETRACTABLE DURING FLIGHT TO MINIMIZE THE DISTANCE BETWEEN SAID WING AND SAID SURFACE DURING FLIGHT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |